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Beispiel

jest-worker 30.4.1: FifoQueue

Verifiziertes Beispiel für npm jest-worker 30.4.1: FifoQueue. Der Vertrag lief auf node 22 · linux debian/x64 · docker und bestand.

sha256:b9209bc832c22398a1dca5a80e20c513ef185e3edb4bbf34e17f469b8f8b8c45

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Ausführungsbelege

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Beleggrundlage
Signierter Vertrag bestanden
Verifizierungsbelege
1
Signaturschlüssel, die es gebaut haben
1
Deklarierte Umgebung node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10

Umgebungen der Verifizierungsläufe

Umgebung Contract Stufen Lauf
node 22 · linux debian/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1node:22@sha256:8a34c4ab3ea2…		 2026-09-03

Fall

HOW
Ziel
verify jest-worker.FifoQueue in pkg:npm/jest-worker@30.4.1
Pakete
Symbole
  • jest-worker.FifoQueue
Umgebung
node 22.23.2
Erstellt
2026-09-03T04:52:47Z

Contract

  1. FifoQueue class is exported by jest-worker and instantiable
  2. enqueue without workerId enqueues tasks into shared queue and dequeue retrieves them in FIFO order across workers
  3. enqueue with workerId enqueues tasks into worker-specific queue
  4. dequeue prioritizes preceding shared tasks until their processed flag is set
  5. dequeue returns null when both worker-specific and shared queues are empty

Dateien

  • PROMPT.md
  • csx.json
  • index.mjs
  • package-lock.json
  • package.json
  • spec.json
  • test/contract.mjs

Quellartefakt herunterladen (tar.gz)

Quelltext

PROMPT.md
Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify jest-worker.FifoQueue in pkg:npm/jest-worker@30.4.1
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/jest-worker@30.4.1
Demonstrate these symbols/APIs:
  - jest-worker.FifoQueue

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.
csx.json
{"case":{"caseId":"case:sha256:71fea6294fb8a255762a946119e540dd64d131cf918299601c374956ea5bea38","contract":["FifoQueue class is exported by jest-worker and instantiable","enqueue without workerId enqueues tasks into shared queue and dequeue retrieves them in FIFO order across workers","enqueue with workerId enqueues tasks into worker-specific queue","dequeue prioritizes preceding shared tasks until their processed flag is set","dequeue returns null when both worker-specific and shared queues are empty"],"goal":"verify jest-worker.FifoQueue in pkg:npm/jest-worker@30.4.1","kind":"HOW","packages":["pkg:npm/jest-worker@30.4.1"],"schemaVersion":1,"symbols":["jest-worker.FifoQueue"]},"contractCommand":["node","test/contract.mjs"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","executionContext":"node","language":"javascript","libc":"glibc","libcVersion":"2.39","moduleSystem":"esm","os":"linux","osVersionBucket":"24","packageManager":"npm","packageManagerVersion":"10.9.8","runtime":"node","runtimeVersion":"22.23.2","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/jest-worker@30.4.1"],"schemaVersion":1,"subject":"pkg:npm/jest-worker@30.4.1","symbols":["jest-worker.FifoQueue"],"verifierAdapter":"node-typescript@1"}
index.mjs
import { FifoQueue } from 'jest-worker';

export { FifoQueue };

/**
 * Instantiates a new FifoQueue.
 *
 * @returns {FifoQueue}
 */
export function createFifoQueue() {
  return new FifoQueue();
}

/**
 * Creates a mock child message task structure compatible with jest-worker QueueChildMessage.
 *
 * @param {string|number} id - Task identifier
 * @param {boolean} [isProcessed=false] - Initial processed status
 * @param {string} [methodName='runTask'] - Method name in the child message call
 * @param {Array<unknown>} [args=[]] - Arguments array
 * @returns {object} QueueChildMessage task
 */
export function createQueueTask(id, isProcessed = false, methodName = 'runTask', args = []) {
  return {
    request: [1, isProcessed, methodName, args],
    onStart: () => {},
    onEnd: () => {},
    onCustomMessage: () => {},
    id,
  };
}

/**
 * Enqueues a task into a FifoQueue.
 *
 * @param {FifoQueue} queue - Queue instance
 * @param {object} task - Task to enqueue
 * @param {number} [workerId] - Target worker ID
 */
export function enqueueTask(queue, task, workerId) {
  queue.enqueue(task, workerId);
}

/**
 * Dequeues the next task from a FifoQueue for the given worker.
 *
 * @param {FifoQueue} queue - Queue instance
 * @param {number} workerId - Worker ID
 * @returns {object|null} Next task or null
 */
export function dequeueTask(queue, workerId) {
  return queue.dequeue(workerId);
}
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package.json
{
  "name": "sample-jest-worker-fifo-queue",
  "version": "1.0.0",
  "description": "Clean-room verification sample for jest-worker.FifoQueue",
  "type": "module",
  "private": true,
  "license": "MIT-0",
  "scripts": {
    "test": "node test/contract.mjs"
  },
  "dependencies": {
    "jest-worker": "30.4.1"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify jest-worker.FifoQueue in pkg:npm/jest-worker@30.4.1",
  "kind": "HOW",
  "packages": [
    "pkg:npm/jest-worker@30.4.1"
  ],
  "symbols": [
    "jest-worker.FifoQueue"
  ]
}
test/contract.mjs
import assert from 'node:assert/strict';
import {
  FifoQueue,
  createFifoQueue,
  createQueueTask,
  enqueueTask,
  dequeueTask,
} from '../index.mjs';

// Contract 1: FifoQueue class is exported by jest-worker and instantiable
{
  assert.strictEqual(typeof FifoQueue, 'function');
  const queue = createFifoQueue();
  assert.ok(queue instanceof FifoQueue);
  assert.strictEqual(typeof queue.enqueue, 'function');
  assert.strictEqual(typeof queue.dequeue, 'function');
}

// Contract 2: enqueue without workerId enqueues tasks into shared queue and dequeue retrieves them in FIFO order across workers
{
  const queue = createFifoQueue();
  const task1 = createQueueTask('task-1');
  const task2 = createQueueTask('task-2');
  const task3 = createQueueTask('task-3');

  enqueueTask(queue, task1);
  enqueueTask(queue, task2);
  enqueueTask(queue, task3);

  assert.strictEqual(dequeueTask(queue, 0), task1);
  assert.strictEqual(dequeueTask(queue, 1), task2);
  assert.strictEqual(dequeueTask(queue, 2), task3);
  assert.strictEqual(dequeueTask(queue, 0), null);
}

// Contract 3: enqueue with workerId enqueues tasks into worker-specific queue
{
  const queue = createFifoQueue();
  const taskW0 = createQueueTask('w0-task');
  const taskW1 = createQueueTask('w1-task');

  enqueueTask(queue, taskW0, 0);
  enqueueTask(queue, taskW1, 1);

  assert.strictEqual(dequeueTask(queue, 0), taskW0);
  assert.strictEqual(dequeueTask(queue, 0), null);

  assert.strictEqual(dequeueTask(queue, 1), taskW1);
  assert.strictEqual(dequeueTask(queue, 1), null);
}

// Contract 4: dequeue prioritizes preceding shared tasks until their processed flag is set
{
  const queue = createFifoQueue();
  const sharedTask = createQueueTask('shared-task', false);
  const workerTask = createQueueTask('worker-task', false);

  enqueueTask(queue, sharedTask);
  enqueueTask(queue, workerTask, 0);

  // Dequeue for worker 0 yields sharedTask first because it was queued prior
  const first = dequeueTask(queue, 0);
  assert.strictEqual(first, sharedTask);

  // Worker task cannot be executed yet because sharedTask is not marked as processed
  assert.strictEqual(dequeueTask(queue, 0), null);

  // Mark sharedTask as processed
  sharedTask.request[1] = true;

  // Worker task is now released
  const second = dequeueTask(queue, 0);
  assert.strictEqual(second, workerTask);
}

// Contract 5: dequeue returns null when both worker-specific and shared queues are empty
{
  const queue = createFifoQueue();
  assert.strictEqual(dequeueTask(queue, 0), null);
  assert.strictEqual(dequeueTask(queue, 1), null);
  assert.strictEqual(dequeueTask(queue, 42), null);
}

console.log('All contracts passed successfully.');

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